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SEGREGATION AND HOMOGENEITY.
251
sion among manufacturers of nickel steel that this element prevents segregation. In order to have some evidence upon this point, an investigation was conducted on an ingot of nickel steel made
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hy The Pennsylvania Steel Company. The cross-section of the ingot was 18"x20", and the weight 5500 pounds. This was rolled into a piece 16 inches wide., 5 inches thick, and 20 feet long, and cut into five slabs. The top slab was rolled into a three-eighth-inch